welcome to the forum, Weasel,
my condolences for your loss; I also recently lost a parent and can relate to the grieving.
I wish you well with the situation from your childhood; it is times like this that these old situations arise. Talk to someone about it; if you have not already done so. Do not let that "creep" of an elder get away with doing this to you. I am sure there are other victims.
good luck, frank